diff options
| author |   Christoph Hellwig <hch@lst.de> | 2022-04-20 06:27:17 +0200 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2022-05-02 14:06:20 -0600 |
| commit | bbb1ebe7a909db4de49777fb7676d5bf293f34c9 (patch) | |
| tree | 0cff6de0224344909db8e482e9167d93b94f8c2a /kernel/trace/blktrace.c | |
| parent | blktrace: cleanup the __trace_note_message interface (diff) | |
| download | linux-dev-bbb1ebe7a909db4de49777fb7676d5bf293f34c9.tar.xz linux-dev-bbb1ebe7a909db4de49777fb7676d5bf293f34c9.zip | |
blk-cgroup: replace bio_blkcg with bio_blkcg_css
All callers of bio_blkcg actually want the CSS, so replace it with an
interface that does return the CSS. This now allows to move
struct blkcg_gq to block/blk-cgroup.h instead of exposing it in a
public header.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20220420042723.1010598-10-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'kernel/trace/blktrace.c')
| -rw-r--r-- | kernel/trace/blktrace.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 9ef349ac49c0..10a32b0f2deb 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -783,6 +783,7 @@ void blk_trace_shutdown(struct request_queue *q) #ifdef CONFIG_BLK_CGROUP static u64 blk_trace_bio_get_cgid(struct request_queue *q, struct bio *bio) { + struct cgroup_subsys_state *blkcg_css; struct blk_trace *bt; /* We don't use the 'bt' value here except as an optimization... */ @@ -790,9 +791,10 @@ static u64 blk_trace_bio_get_cgid(struct request_queue *q, struct bio *bio) if (!bt || !(blk_tracer_flags.val & TRACE_BLK_OPT_CGROUP)) return 0; - if (!bio->bi_blkg) + blkcg_css = bio_blkcg_css(bio); + if (!blkcg_css) return 0; - return cgroup_id(bio_blkcg(bio)->css.cgroup); + return cgroup_id(blkcg_css->cgroup); } #else static u64 blk_trace_bio_get_cgid(struct request_queue *q, struct bio *bio) |